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  <div class="section" id="the-mmlorhtml-configuration-options">
<span id="configure-mmlorhtml"></span><h1>The MMLorHTML configuration options<a class="headerlink" href="#the-mmlorhtml-configuration-options" title="Permalink to this headline">¶</a></h1>
<p>The options below control the operation of the MMLorHTML configuration
file that is run when you include <tt class="docutils literal"><span class="pre">&quot;MMLorHTML.js&quot;</span></tt> in the <cite>config</cite>
array of your configuration.  They are listed with their default
values.  To set any of these options, include a <tt class="docutils literal"><span class="pre">MMLorHTML</span></tt> section
in your <tt class="xref py py-meth docutils literal"><span class="pre">MathJax.Hub.Config()</span></tt> call.  For example</p>
<div class="highlight-javascript"><div class="highlight"><pre><span class="nx">MathJax</span><span class="p">.</span><span class="nx">Hub</span><span class="p">.</span><span class="nx">Config</span><span class="p">({</span>
  <span class="nx">MMLorHTML</span><span class="o">:</span> <span class="p">{</span>
    <span class="nx">prefer</span><span class="o">:</span> <span class="p">{</span>
      <span class="nx">Opera</span><span class="o">:</span> <span class="s2">&quot;MML&quot;</span>
    <span class="p">}</span>
  <span class="p">}</span>
<span class="p">});</span>
</pre></div>
</div>
<p>would set the <tt class="docutils literal"><span class="pre">prefer</span></tt> option so that Opera browser would prefer
MathML to HTML-CSS output (while leaving the settings for other
browsers unchanged).</p>
<p>Note that if you use the <tt class="docutils literal"><span class="pre">MMLorHTML.js</span></tt> configuration file, you should
<strong>not</strong> specify an output processor in the <cite>jax</cite> array of your
configuration; <cite>MMLorHTML</cite> will fill that in for you.</p>
<dl class="describe">
<dt>
<tt class="descname">prefer: { MSIE: &quot;MML&quot;, Firefox: &quot;MML&quot;, Opera: &quot;HTML&quot;, other: &quot;HTML&quot; }</tt></dt>
<dd><p>This lets you set the preferred renderer on a browser-by-browser
basis.  You set the browser to either <tt class="docutils literal"><span class="pre">&quot;MML&quot;</span></tt> or <tt class="docutils literal"><span class="pre">&quot;HTML&quot;</span></tt>
depending on whether you want to use the <cite>NativeMML</cite> or <cite>HTML-CSS</cite>
output processor.  Note that although Opera does process some MathML
natively, its support is not sufficient to handle the more
complicated output generated by MathJax, so its setting is
<tt class="docutils literal"><span class="pre">&quot;HTML&quot;</span></tt> by default.</p>
</dd></dl>

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